Give any four differences between manures and fertilizers.
Differences between manures and fertilizers:
It is natural substance obtained from decomposition of plant or animal wastes.
It is a chemical substance which is rich in a particular nutrient.
It can be prepared in the fields.
It is prepared in the factories.
It is not very rich in plant nutrients like nitrogen, phosphorus, potassium.
It is very rich in plant nutrients like nitrogen, phosphorus, potassium.
It provides lots of humus to the soil.
It does not provide any humus to the soil.